How to georeference an IFC file using Revit

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In order to have a .ifc file aligned with the point cloud or the 3D mesh, the .ifc needs to be imported into PIX4Dcloud in the same coordinate system as the project. 

This article explains how to get a .ifc file in a given coordinate system so it can be imported in PIX4Dcloud and displayed in the aligned position with the point cloud and 3D mesh.

Open an IFC file in Revit

Assuming that .ifc was already generated, open the existing project template by selecting the project template on the Revit home view.

If it is needed to import the .ifc into an existing project template, the file can be accessed under:

  1. On the menu bar, click Insert.
  2. On the dialog window, navigate to the .ifc file.
  3. To import the file, click Open.

After importing or opening the .ifc, use the Project Base Point and the Survey Point to georeference the file.

Define Project Base Point and Survey Point

An essential aspect of getting a .ifc file georeferenced is defining the Project Base Point and the Survey Point

See the following articles, which describe in detail the workflow for:

 
Tip: (Optional) If, after defining the coordinates of the Project Base Point or Survey Point, it is necessary to correct the defined initial position, follow these instructions:

If more information is needed on optimizing the use of Project Base Point and Survey Point, see the following article Best Practices: Project Base Point and Survey Point.

Once the Project Base Point and Survey Point have been defined, the .ifc can be exported.

Export an IFC file in Revit

To export the IFC files, follow these instructions:

  • On the Menu bar, click File > Export > IFC.
  • On the Export IFC dialog, click Modify setup...
  • On the Modify Setup dialog, in the General tab, select Survey Point as Coordinate Base.
  • Click OK to confirm.
    Export_geoference_IFC_Revit_PIX4Dcloud.jpg
 
Important: If an unexpected issue occurs when trying to export, please do not hesitate to contact us for further support at the following email: digital_construction@pix4d.com.

Import and visualize the georeference IFC file on PIX4Dcloud

 
Warning: If the .ifc file has been previously imported into a project and it shows misaligned respect to the point cloud, it is recommended to replace it with the .ifc file correctly georeferenced.

For more information about how to proceed, see the support article: How to import and visualize an IFC file on PIX4Dcloud.

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